CN113257479B - Polyesterimine enameled wire and preparation method thereof - Google Patents
Polyesterimine enameled wire and preparation method thereof Download PDFInfo
- Publication number
- CN113257479B CN113257479B CN202110530949.2A CN202110530949A CN113257479B CN 113257479 B CN113257479 B CN 113257479B CN 202110530949 A CN202110530949 A CN 202110530949A CN 113257479 B CN113257479 B CN 113257479B
- Authority
- CN
- China
- Prior art keywords
- polyester
- enameled wire
- imide
- preparation
- paint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/065—Insulating conductors with lacquers or enamels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/16—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying
- H01B13/165—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying by spraying
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a novel polyester imide enameled wire and a preparation method thereof, wherein the novel filler is utilized, and the prepared modified polyester imide enameled wire has the characteristics of small friction coefficient, high surface hardness, good scratch resistance and excellent softening breakdown performance after being dried, and meanwhile, the breakdown voltage is greatly improved; the adhesion effect of the modified polyester imine paint film molecules and the conductor is improved, the flexibility of the polyester imine enameled wire can be effectively improved, and the paint film of the enameled wire with the nominal diameter of more than 0.8mm is not cracked and separated even if a winding experiment and a snap-off experiment are carried out; the use safety and the application range of the prepared polyesterimide enameled wire are improved.
Description
Technical Field
The invention relates to a preparation process of an enameled wire, in particular to a novel polyesterimide enameled wire and a preparation method thereof.
Background
The enameled wire is an important electrical insulating part and is used for generating a good insulating layer between wires in the winding so as to organize the circulation of current and maintain the normal and stable operation of the whole workpiece equipment, so that the enameled wire is required to have higher mechanical strength, temperature resistance and aging resistance.
The main chain structure of the polyester-imide molecule contains both ester groups and heat-resistant imine rings, so that the polyester-imide molecule has the flexibility of polyester and the heat resistance of polyimide. The polyesterimide enameled wire is widely used in sealed motors, electric tools, and other motors and electric appliances with high heat resistance grades due to the excellent heat resistance. With the continuous updating of the electrical equipment, the performance requirements of the electrical equipment on the enamelled wire are more and more strict, so the technical requirements on the enamelled wire paint are higher. Due to the fact that the application fields of the electric appliances are different, the grades of enamelled wires applied by different motors are different.
Although the polyesterimide enameled wire can meet the requirements of most customers in terms of electric performance, thermal performance, chemical performance and the like, the polyesterimide enameled wire has the following defects that:
1. because the adhesion force between the polyester imide paint film molecules and the conductors is insufficient, in a paint film flexibility test, the polyester imide enameled wire is coiled for 1d after 15% extension, and the phenomenon of paint film cracking occurs, in particular to an enameled wire with the nominal diameter of more than 0.8 mm;
2. the surface hardness, scratch resistance and softening breakdown properties of the polyesterimide paint film are poor.
In recent years, the requirements of customers at home and abroad on the quality and reliability of products are higher and higher requirements are also put forward on the polyesterimide enameled wire. The invention develops a novel polyesterimide enameled wire and a preparation method thereof, the surface hardness, scratch resistance and softening breakdown performance of the novel polyesterimide enameled wire are improved, the adhesive force is improved, meanwhile, the breakdown voltage can be effectively improved, and the novel polyesterimide enameled wire has positive effects of improving the use safety of the polyesterimide enameled wire and expanding the application range of the polyesterimide enameled wire.
Disclosure of Invention
The invention develops a novel polyesterimide enameled wire and a preparation method thereof, which have the advantages that the surface hardness, scratch resistance and softening breakdown performance are improved, the adhesive force is improved, and meanwhile, the breakdown voltage can be effectively improved.
A preparation method of a novel polyesterimide enameled wire comprises the following steps:
1) A blank preparation step: industrial pure copper is used as a blank, and the appearance of the copper material is ensured to have no defects of oxidization, burrs and cracks;
2) And (3) wiredrawing: carrying out large stretching, medium stretching, small stretching and micro stretching on the copper material in a grading manner to obtain a bare copper wire;
3) Cleaning, namely cleaning greasy dirt and particles on the surface of the bare copper wire;
4) Annealing the cleaned bare copper wire in an annealing furnace at 500-700 ℃;
5) The steps of painting and baking, namely, carrying out surface painting on the annealed bare copper wire, wherein paint liquid is modified polyester imide paint, and baking and curing after painting;
6) And (3) a lubrication step: the surface of the baked bare copper wire is coated with lubricant after being cooled;
7) And (3) a wire winding step: and carrying out winding treatment of the enameled wire by a winding device.
Further, the modified polyester-imide paint comprises the following components:
50-60 parts of polyester imine resin; 3-6 parts of filler; 20-30 parts of solvent; 1-3 parts of curing agent.
The polyester imine resin is one of Kelamal ZYH9150 and Yingtai YA114.
The filler is powder with the particle size of less than 100nm, which is obtained by grinding one ore of illite, sepiolite and allophane.
The solvent is one of toluene, xylene and petroleum ether.
The curing agent is one of linear phenolic resin, tetrabutyl titanate and tetraisopropyl titanate, preferably the linear phenolic resin, the tetrabutyl titanate and the tetraisopropyl titanate with the mass ratio of 3-5:1-2:1-2.
Further, the filler is modified sepiolite powder, and the preparation method comprises the following steps:
(1) At the particle size<Adding 60-80% of water into 100nm sepiolite powder, uniformly mixing and pulping, then adding sodium hexametaphosphate, oleamide and silane coupling agent which are respectively 3-5% and 5-8% of sepiolite powder by mass, stirring and emulsifying at high speed, and introducing CO while stirring 2 Until the pH is 6.5-7.0;
(2) And (3) carrying out vacuum dehydration and drying on the slurry obtained in the step (1), and then coarsely grinding the solid obtained by drying by a sand mill until the particle size is less than 500nm to obtain the modified sepiolite powder.
The silane coupling agent is one of KH550, KH560 and KH 570.
Further, the preparation method of the modified polyester-imide paint comprises the following steps:
(1) Dissolving the polyester-imide resin in a solvent, adding a filler, continuously grinding for 2-4 hours by a sand mill after uniform dispersion, and obtaining polyester-imide slurry after finishing grinding;
(2) Dissolving the curing agent in the rest solvent, adding the polyester-imide slurry prepared in the step (1) after the dissolution is completed, and uniformly stirring to prepare the modified polyester-imide paint.
The invention has the advantages that:
1. the novel filler is utilized, and the prepared modified polyester imide paint has the characteristics of small friction coefficient, high surface hardness, good scratch resistance and excellent softening breakdown performance after being dried, and meanwhile, the breakdown voltage is greatly improved, so that the use safety and the application range of the prepared enameled wire can be improved; the sepiolite powder has better effect of improving various properties of the modified polyester-imide paint by virtue of a layer chain structure;
2. the modified sepiolite powder has the function of improving the adhesion of the modified polyester-imide paint film molecules and conductors, can effectively improve the flexibility of the polyester-imide enameled wire, and does not crack or separate even if the paint film of the enameled wire with the nominal diameter of more than 0.8mm is subjected to winding experiments and quick-break experiments;
3. the modified sepiolite powder has the characteristic of good lubricity, the friction coefficient of the prepared modified polyester-imide paint film is small, the prepared enameled wire does not need to be coated with a lubricant before winding, the process is saved, and the production efficiency is improved;
4. the modified sepiolite powder also has the function of stabilizing the modified polyester-imide paint.
Detailed Description
Example 1
A preparation method of a novel polyester imide enameled wire comprises the following steps of:
50 parts of polyester imine resin; 3 parts of filler; 20 parts of solvent; 1 part of curing agent.
The polyester imine resin is Keramal ZYH9150.
The filler is powder with the particle size of 80nm obtained by grinding illite.
The solvent is toluene.
The curing agent is phenolic novolac resin.
The preparation method of the modified polyester-imide paint comprises the following steps:
(1) Dissolving the polyester-imide resin in a solvent, adding a filler, continuously grinding for 2 hours by a sand mill after uniform dispersion, and obtaining polyester-imide slurry after finishing grinding;
(2) Dissolving the curing agent in the rest solvent, adding the polyester-imide slurry prepared in the step (1) after the dissolution is completed, and uniformly stirring to prepare the modified polyester-imide paint.
Example 2
A preparation method of a novel polyester imide enameled wire comprises the following steps of:
52 parts of a polyester imine resin; 5 parts of filler; 24 parts of solvent; 2 parts of curing agent.
The polyester imine resin is Keramal ZYH9150.
The filler is powder with the particle size of 50nm, which is obtained by grinding sepiolite.
The solvent is xylene.
The curing agent is tetrabutyl titanate.
The preparation method of the modified polyester-imide paint comprises the following steps:
(1) Dissolving the polyester-imide resin in a solvent, adding a filler, continuously grinding for 3 hours by a sand mill after uniform dispersion, and obtaining polyester-imide slurry after finishing grinding;
(2) Dissolving the curing agent in the rest solvent, adding the polyester-imide slurry prepared in the step (1) after the dissolution is completed, and uniformly stirring to prepare the modified polyester-imide paint.
Example 3
A preparation method of a novel polyester imide enameled wire comprises the following steps of:
60 parts of polyester imine resin; 6 parts of filler; 30 parts of solvent; 3 parts of curing agent.
The polyester imine resin is Yingtai YA114.
The filler is powder with the particle size of 50nm, which is obtained by grinding allophane.
The solvent is petroleum ether.
The curing agent is tetraisopropyl titanate.
The preparation method of the modified polyester-imide paint comprises the following steps:
(1) Dissolving the polyester-imide resin in a solvent, adding a filler, continuously grinding for 4 hours by a sand mill after uniform dispersion, and obtaining polyester-imide slurry after finishing grinding;
(2) Dissolving the curing agent in the rest solvent, adding the polyester-imide slurry prepared in the step (1) after the dissolution is completed, and uniformly stirring to prepare the modified polyester-imide paint.
Example 4
The preparation method of the novel polyesterimide enameled wire is characterized in that the filler is modified sepiolite powder, and the preparation method is as follows:
(1) Adding 65% water into sepiolite powder with particle diameter of 50nm, mixing, pulping, adding sodium hexametaphosphate with mass of 4% sepiolite powder, oleamide with mass of 6% and KH550 with mass of 4%, stirring at high speed, emulsifying, and introducing CO while stirring 2 To a pH of 6.8;
(2) Vacuum dehydrating and drying the slurry obtained in the step (1), and coarsely grinding the solid obtained by drying by a sand mill until the particle size is less than 500nm to obtain modified sepiolite powder; the remainder was the same as in example 2.
Example 5
A preparation method of a novel polyesterimide enameled wire, wherein the curing agent is phenolic novolac resin, the mass ratio of tetrabutyl titanate to tetraisopropyl titanate is 4:2:1, and the rest is the same as in example 2.
Comparative example 1
A preparation method of a polyesterimide enameled wire, wherein no filler is added, and the rest is the same as in example 2.
Comparative example 2
A preparation method of a polyesterimide enameled wire adopts fumed silica with the particle size of 50nm as a filler, and the rest is the same as in example 2.
Comparative example 3
A preparation method of a polyesterimide enameled wire, modified sepiolite powder is not added with sodium hexametaphosphate, and the rest is the same as in example 4.
Comparative example 4
A preparation method of a polyesterimide enameled wire, modified sepiolite powder is not added with oleamide, and the rest is the same as in example 4.
Performance test:
the comparative example and the example adopt bare copper wires with the same batch and the diameter of 0.9mm, and after annealing at 550 ℃, the bare copper wires are used for producing enameled wires in the comparative example and the example, and the thickness of a paint film is unified to be 0.070mm.
1. Paint film performance test:
the above-described comparative examples and examples were individually film-formed, and then the following properties of the polyester-imide paint films produced in each of the examples and comparative examples were tested:
1. coefficient of dynamic friction: the test method is GB10006-88 plastic friction coefficient;
2. pencil hardness: the testing method is GB/T6739-2006, paint film hardness is measured by a colored paint and varnish pencil method;
2. and (3) testing the performance of the enameled wire:
according to GB/T6109.1-2008 enamelled round winding wire part 1: general provision, GB/T4074-2008 winding wire test method, tests scratch resistance, softening breakdown property and breakdown voltage of enamelled wires prepared by each example and comparative example, and tests flexibility and adhesive force of the enamelled wires by winding experiments and snap-off experiments:
the scratch resistance takes the minimum scratch force as an index, and the larger the minimum scratch force is, the better the scratch resistance is;
breakdown voltage to test breakdown voltage at room temperature, high temperature (180 ℃);
3. storage stability test of polyester imine paint
The polyester-imide paint prepared in example 4 and the polyester-imide paint prepared in comparative example 1, and the polyester-imide paint prepared in comparative example 1 added with 0.2 per mill hydroquinone, the longer the time interval is, the more stable the polyester-imide paint is compared with the time interval required for the viscosity to increase by 10% under 60 ℃.
TABLE 1
From the above table, the novel filler is utilized, and the prepared modified polyester imide paint has the characteristics of small friction coefficient, high surface hardness, good scratch resistance and excellent softening breakdown performance after being dried, and meanwhile, the breakdown voltage is greatly improved, so that the use safety and the application range of the prepared enameled wire can be improved; the modified sepiolite powder has the advantages of improving the adhesion effect of the modified polyester-imide paint film molecules and conductors, along with good lubricity, and the prepared modified polyester-imide paint film has small friction coefficient and the prepared enameled wire is smooth to wind and unwind.
The performance comparison trend also accords with other polyesterimide enameled wires with different paint film thicknesses.
TABLE 2
| Sample preparation | Time interval (day) required for viscosity increase of 10% |
| Example 4 preparation of the Polyesterimine paint | 14 |
| Comparative example 1 Polyesterimine paint | 5 |
| Polyester imide paint prepared in comparative example 1 with hydroquinone added | 13 |
From the above table, the modified sepiolite powder also has the effect of stabilizing the modified polyesterimide paint. Meanwhile, the polyester imide paint prepared in the comparative example 4 has no stabilizing effect through testing.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (5)
1. A preparation method of a polyesterimide enameled wire is characterized by comprising the following steps of: the preparation method comprises the following steps:
1) A blank preparation step: industrial pure copper is used as a blank, and the appearance of the copper material is ensured to have no defects of oxidization, burrs and cracks;
2) And (3) wiredrawing: carrying out large stretching, medium stretching, small stretching and micro stretching on the copper material in a grading manner to obtain a bare copper wire;
3) Cleaning, namely cleaning greasy dirt and particles on the surface of the bare copper wire;
4) Annealing the cleaned bare copper wire in an annealing furnace at 500-700 ℃;
5) The steps of painting and baking, namely, carrying out surface painting on the annealed bare copper wire, wherein paint liquid is modified polyester imide paint, and baking and curing after painting;
6) And (3) a lubrication step: the surface of the baked bare copper wire is coated with lubricant after being cooled;
7) And (3) a wire winding step: carrying out winding treatment of the enameled wire by a winding device;
the modified polyester-imide paint comprises the following components:
50-60 parts of polyester imine resin; 3-6 parts of filler; 20-30 parts of solvent; 1-3 parts of curing agent;
the curing agent is a mixture of linear phenolic resin, tetrabutyl titanate and tetraisopropyl titanate with the mass ratio of 3-5:1-2:1-2;
the filler is modified sepiolite powder, and the preparation method comprises the following steps:
(1) At the particle size<Adding 60-80% of water into 100nm sepiolite powder, uniformly mixing and pulping, then adding sodium hexametaphosphate, oleamide and silane coupling agent which are respectively 3-5% and 5-8% of sepiolite powder by mass, stirring and emulsifying at high speed, and introducing CO while stirring 2 Until the pH is 6.5-7.0;
(2) And (3) carrying out vacuum dehydration and drying on the slurry obtained in the step (1), and then coarsely grinding the solid obtained by drying by a sand mill until the particle size is less than 500nm to obtain the modified sepiolite powder.
2. The method for preparing a polyesterimide enameled wire according to claim 1 is characterized in that: the polyester imine resin is one of Kelamal ZYH9150 and Yingtai YA114.
3. The method for preparing a polyesterimide enameled wire according to claim 1 is characterized in that: the solvent is one of toluene, xylene and petroleum ether.
4. The method for preparing a polyesterimide enameled wire according to claim 1 is characterized in that: the silane coupling agent is one of KH550, KH560 and KH 570.
5. The method for preparing a polyesterimide enameled wire according to any one of claims 1 to 4 characterized in that: the preparation method of the modified polyester-imide paint comprises the following steps:
(1) Dissolving the polyester-imide resin in a solvent, adding a filler, continuously grinding for 2-4 hours by a sand mill after uniform dispersion, and obtaining polyester-imide slurry after finishing grinding;
(2) Dissolving the curing agent in the rest solvent, adding the polyester-imide slurry prepared in the step (1) after the dissolution is completed, and uniformly stirring to prepare the modified polyester-imide paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110530949.2A CN113257479B (en) | 2021-05-15 | 2021-05-15 | Polyesterimine enameled wire and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110530949.2A CN113257479B (en) | 2021-05-15 | 2021-05-15 | Polyesterimine enameled wire and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113257479A CN113257479A (en) | 2021-08-13 |
| CN113257479B true CN113257479B (en) | 2023-12-26 |
Family
ID=77182210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110530949.2A Active CN113257479B (en) | 2021-05-15 | 2021-05-15 | Polyesterimine enameled wire and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113257479B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114974729B (en) * | 2022-04-21 | 2025-02-07 | 江西中易微连新材料科技有限公司 | A production process for single-layer enameled multi-color parallel wires |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100012592A (en) * | 2008-07-29 | 2010-02-08 | 동신대학교산학협력단 | A nanocomposite based on cross-linked clay and a cable using the same |
| CN107903774A (en) * | 2017-11-10 | 2018-04-13 | 陈建峰 | A kind of flame retardant type wire enamel |
-
2021
- 2021-05-15 CN CN202110530949.2A patent/CN113257479B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100012592A (en) * | 2008-07-29 | 2010-02-08 | 동신대학교산학협력단 | A nanocomposite based on cross-linked clay and a cable using the same |
| CN107903774A (en) * | 2017-11-10 | 2018-04-13 | 陈建峰 | A kind of flame retardant type wire enamel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113257479A (en) | 2021-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113257479B (en) | Polyesterimine enameled wire and preparation method thereof | |
| CN117986999B (en) | Polyamide imide wire enamel and preparation method thereof | |
| CN1919947A (en) | High heat-stage non-pinhole polyesterimide enamelled wire insulating paint modifier | |
| CN101319083A (en) | Polyester imine aluminium wire wire coating enamel modifier | |
| US2542069A (en) | Suspensions of polymeric chlorotrifluoroethylene | |
| CN105601912A (en) | Self-repairing supermolecule insulating material and preparation method thereof | |
| CN100481275C (en) | Production of C-level polyurethane enamelled wire | |
| CN118389049A (en) | Enamelled wire finish paint, enamelled wire and preparation method thereof | |
| CN117701136A (en) | Coating for superfine fine wire ultrathin insulating coating and preparation method thereof | |
| CN104130700A (en) | Preparation method of flexible polyester imide enameled wire insulating paint | |
| CN111410844A (en) | Novel halogen-free flame-retardant ceramic cable silicone rubber composite belt and preparation method thereof | |
| CN116574355A (en) | Insulating flame-retardant copper core cable and preparation method thereof | |
| CN109545452B (en) | Enameled wire and preparation process thereof | |
| CN113278109B (en) | Low-volatility high-performance environment-friendly insulating resin and preparation method thereof | |
| CN112071476B (en) | ATF oil-resistant and hydrolysis-resistant insulating layer and electromagnetic wire and preparation method thereof | |
| CN113292909A (en) | Moisture-resistant polyester enameled wire and preparation method thereof | |
| CN115746696A (en) | Polyimide paint for high-heat-resistance enameled wire and high-heat-resistance enameled wire | |
| CN109135553B (en) | Polyimide coil enameled wire for high-speed rail and preparation method thereof | |
| CN106752894A (en) | A kind of preparation method of self-lubricating polyamide acid imide enamelled wire paint | |
| CN110931151B (en) | Sintered aluminum flat wire for wind power stator | |
| CN111253856B (en) | High-temperature-resistant and corona-resistant polyimide wire enamel and preparation method thereof | |
| JP4061981B2 (en) | Inverter surge resistant coil insulation varnish and inverter surge resistant coil | |
| CN118737584B (en) | A preparation process of PEEK composite insulated electromagnetic wire | |
| CN116731606B (en) | Self-lubricating polyamideimide wire enamel and preparation method thereof | |
| CN118711907B (en) | A polyamide-imide enameled rectangular copper wire for new energy vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 335200 Longgang District, Yujiang Industrial Park, Yingtan City, Jiangxi Province Applicant after: Walda Cable Group Co.,Ltd. Address before: 335200 Longgang District, Yujiang Industrial Park, Yingtan City, Jiangxi Province Applicant before: Jiangxi Walda Cable Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A polyester imine enameled wire and its preparation method Granted publication date: 20231226 Pledgee: Agricultural Bank of China Co.,Ltd. Yingtan Yujiang Sub branch Pledgor: Walda Cable Group Co.,Ltd. Registration number: Y2024980015658 |